
Back in Eau Claire, we caught mammatus as darkness fell. This edited phone photo looks kind of like a painting.
We headed up into Minnesota first, decided not to tangle with Minneapolis, and got in the path of a fast-moving supercell near Cannon Falls. It was rotating and even had a brief lowering, but other than its abundant hail — which produced an eerie hail roar — it didn’t get its act together. And we had more problems: roads and rivers. We had to go way out of our way to cross the Mississippi River into Wisconsin, a lovely land full of trees and hills. And cheese, though I didn’t get to explore the dairyland, dang it.
We got on another tornado-warned storm that seemed unlikely to produce one and ended up in Eau Claire photographing lightning. A fun day … but a LOT of driving: 579 miles, to be exact. It was my first visit to Wisconsin, so that was kinda cool. And one of Alethea’s friends treated us to pizza at her fabulous Topper’s restaurant. Wisconsin cheese for the win!
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Last Thursday, Dave and I targeted northeast Iowa. Low pressure was moving into the area, which would cause the surface winds to come from the south or southeast, while upper-level winds were streaming in from the west. The result: shear in the atmosphere, meaning if a storm went up — and it was likely where the warm and cold fronts met — it would probably rotate.
Going backwards in time to May 16 — the day before — we played what seemed iffy chances for supercells in western Nebraska. We thought the action would be in extreme western Nebraska or even eastern Wyoming, especially after checking data and running into chasers Keith Brown and David Fogel (again in Ogallala). As we zoomed west, it became clear that this was going to be a major chaser convergence. Translated: A circus of idiot drivers. Now, obviously, I don’t think all chasers are irresponsible, but there are definitely chasers who are giving the rest of us a bad name. They are also becoming incredibly ostentatious, with loads of silly equipment on their roofs, including (in my opinion) useless marine radar units. What, are they going boating in their Ford Expeditions?
We saw the storm from when it was a pup, a little towering cumulus. It exploded and soon became a big bad dog — isolated. Huge. Multiple overshooting tops. But it was SCREAMING southeast, way ahead of us. It zoomed into Arkansas (Richard left us in mid-chase because of the hopelessness of the pursuit), and we had to listen to hail reports and spotter-reported tornado warning(s) as we tried to pursue it. We ended up in Arkansas, just east of Fort Smith, with a photogenic bomb that formed on its backside — very pretty, though it croaked at sunset. We met David O. Stillings, the Lightning Stalker (that’s just how he introduces himself, too, at rat-a-tat speed) and Jason Persoff, both Florida chasers traveling with a Pioneer Productions TV crew, as well as a couple of Arkansas chasers — Jason Politte and Scott Blair. We’re all part of a strange, little mobile community that keeps meeting on the grassy banks of farm roads in the middle of nowhere.
